Fantasy is dangerous. The genre has its share of royalists, reactionaries, and racists. Tolkien and Lewis, who taught together at Oxford, were devout Catholics. Writers of the Left sometimes dismiss the genre as ideologically suspect, preferring science fiction in its stead. But no such distinction holds. Science fiction writers of the Left have written works of fantasy, and rightwing fantasists like C.S. Lewis wrote works of science fiction, like the latter’s WWII-era Space Trilogy: Out of the Silent Planet (1938), Perelandra (1943), and That Hideous Strength (1945). Each genre remains anyone’s game.